Uncertainties and resonant behavior of 2023 FW₁₄. Top panel: evolution of the relative mean longitude with Mars for the nominal orbit (in black) of 2023 FW₁₄ and those of relevant control orbits in the time interval (−5000, 5000) yr. The control orbits or clones have Cartesian state vectors (see Appendix B) separated +3σ (green), −3σ (light-green), +6σ (orange), −6σ (gold), +9σ (red), and −9σ (pink) from the nominal values in Table B.1. Bottom panel: evolution of the difference between the value of the λ_r of the control orbits and that of the nominal orbit for the same time interval. The output time-step size is 0.1 yr.